Hughes,Joan K. <br/><br/>
PL/I Structured programming. 

 - 2nd  ed. 
 - New york :  John wiley,  1973. 
 - 825  p. ;    cm. 
<br/><br/>index. 
<br/><br/><label>ISBN: </label> $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>programming.